US6668815B1 - Self-aligning paintball gun barrel assembly with optional bore size adapter - Google Patents
Self-aligning paintball gun barrel assembly with optional bore size adapter Download PDFInfo
- Publication number
- US6668815B1 US6668815B1 US10/227,735 US22773502A US6668815B1 US 6668815 B1 US6668815 B1 US 6668815B1 US 22773502 A US22773502 A US 22773502A US 6668815 B1 US6668815 B1 US 6668815B1
- Authority
- US
- United States
- Prior art keywords
- bore
- insert housing
- assembly
- muzzle portion
- bore tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
- F41A21/482—Barrel mounting means, e.g. releasable mountings for replaceable barrels using continuous threads on the barrel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/32—Muzzle attachments or glands
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
Definitions
- the present invention is directed generally to paintball guns; and, more particularly, to a self-aligning multi-part paintball gun barrel assembly.
- Pneumatic paintball guns launch fluid-filled projectiles by controlling the release of compressed gas from the gun.
- the fluid-filled projectiles variously denominated as shooting capsules, marking pellets, and paintballs (hereinafter generically referred to as “paintballs”) are generally made of a fragile shell filled with biodegradable “paint.”
- paintballs When a competitor or other object is hit with a paintball, the shell ruptures and the paint is released onto and marks the target, thereby providing evidence of the hit.
- paintball gun barrels formed of two or more pieces connected in series that may be disassembled in order to make storage and transport easier. Because such arrangements typically have two parts, a shank portion that attaches to the paintball gun body and a muzzle portion that attaches to the distal end of the shank, these arrangements are commonly referred to as “two-piece” paintball gun barrels.
- two pieces of the barrel are designed to be connected via a simple threaded connection, as is typical, one problem that commonly arises is providing good alignment between the bores of the two portions. This is due to the very tight dimensional control needed to size the features appropriately and to keep the bores concentric with the threads on the mating ends of the two barrel pieces. If the two bores are not concentric where they meet, a lip may be formed in the combined barrel bore that has a tendency to rupture the skin of the paintballs while the paintballs are being fired through the barrel, leading to obviously poor performance and user dissatisfaction.
- the present invention is directed to a paintball gun barrel assembly.
- the paintball gun barrel assembly includes a muzzle portion that removably couples to a shank assembly.
- the shank assembly is adapted to mate to a paintball gun body and has an internal first bore therethrough and a first angled surface on an output end thereof substantially concentric with the first bore thereat.
- the muzzle portion has a second bore, an output end, and an input end; the input end having a second angled surface substantially concentric with the second bore. Mating the muzzle to the shank assembly causes the respective angled surfaces to inter-engage and thereby causes the first bore at the output end of the shank assembly to substantially align with the second bore at the input end of the muzzle.
- the shank assembly and the muzzle are self-aligning with respect to each other.
- the shank assembly includes an insert housing with a first removable bore tube insert.
- the insert housing is adapted to mate to the paintball gun body and has a longitudinal internal passage.
- the bore tube is adapted to removably fit in the internal passage of the insert housing.
- the first angled surface and the first bore are associated with the bore tube. With the first bore tube disposed in the insert housing and the insert housing mated to the muzzle portion, engaging the first angled surface with the second angled surface causes the first bore at the output end of the first bore tube to substantially align with the second bore at the input end of the muzzle portion.
- the bore tube portion of the shank assembly and the muzzle are self-aligning with respect to each other.
- a plurality of different size bore tubes may be used, each having a different internal bore diameter but the same outer dimensions.
- a user may readily change the effective bore diameter of shank assembly to accommodate different sizes of paintballs.
- the user need only remove the muzzle by unscrewing it from the shank assembly, slide the first bore tube out from the insert housing, insert a new bore tube into the insert housing, and reattach the muzzle. Note that no special alignment process is needed, as the muzzle and bore tubes are self-aligning. Further, the entire barrel bore size change process can be accomplished without removing the insert housing from the gun body.
- FIG. 1 shows one embodiment of the paintball gun barrel assembly of the present invention mated to a paintball gun body.
- FIG. 2 shows one embodiment of the paintball gun barrel assembly of the present invention.
- FIG. 3 shows an exploded view of the components of FIG. 2 .
- FIG. 4 is a partial cross-sectional view of the coupling between the muzzle and the shank assembly of FIG. 2 .
- FIG. 5 shows an exploded view of another embodiment of the present invention including two different sized bore tubes.
- a paintball gun generally designated 10
- the gun 10 may take any form known in the art, and typically includes a main gun body 12 having a trigger 14 , a magazine 16 , and an air hose 18 connected to a supply of pressurized air.
- the main gun body 12 typically includes an internally threaded orifice leading to its firing chamber; the gun barrel assembly 30 of the present invention is intended to mate to the gun body 12 via this threaded orifice.
- suitable paintball guns are available commercially from Worrgame Products of Corona, Calif. and WDP of Birmingham, England.
- the gun barrel assembly 30 attaches to the main gun body 12 .
- the gun barrel assembly 30 includes a muzzle portion 40 distal from the gun body 12 and a shank assembly 60 connecting the muzzle portion 40 to the gun body 12 .
- the muzzle portion 40 (or simply “muzzle”) is generally elongate with a bore 42 running therethrough along a longitudinal axis 44 .
- the distal portion of the muzzle 40 may include a plurality of holes and/or flarings as known in the art.
- the proximal portion of the muzzle 40 includes external threads 46 , an external shoulder 48 , and an angled surface 50 .
- the external shoulder 48 which is disposed distal to the threads 46 , provides a stop for a optional seal 49 , such as an elastomeric O-ring.
- the angled surface 50 is disposed at the input end of the bore 42 of the muzzle 40 , and takes the form of a ring around the entry to the bore 42 . Accordingly, the bore 42 may be described as having a chamfered entry.
- the angular surface 50 need not be a flat surface, but this may be advantageous; indeed a flat surface at an inward angle in the range of 5°-60°, and more particularly of approximately 10-15°, may be most advantageous.
- the angled surface 50 and the bore 42 should be concentric about the longitudinal axis 44 .
- the muzzle 40 releasably couples to the shank assembly 60 , such as via a threaded coupling comprising threads 46 .
- the shank assembly 60 connects the muzzle 40 to the main gun body 12 .
- the shank assembly 60 of FIG. 3 includes insert housing 70 and a bore tube 90 .
- the insert housing 70 acts as the main support for the shank assembly 60 , and is adapted to mate to the paintball gun main body 12 .
- the insert housing 70 has a longitudinal internal passage 72 , external threads 80 on its proximal end, internal threads 78 on its distal end, and may optionally include a viewing window 82 .
- the internal passage 72 extends the length of the insert housing 70 , from the proximal face 76 to the distal face 78 .
- the internal passage 72 advantageously includes a shoulder 73 , such as where a larger diameter inner wall extending from the distal face 78 meets a smaller diameter inner wall extending from the proximal face 76 .
- the bore tube 90 is a generally elongate body having a longitudinal bore 92 disposed along a longitudinal axis 94 that extends from an input end 96 to an output end 98 .
- the output end 98 of the bore tube 90 includes an angular surface 100 that takes the form of a ring about the exit from the bore tube 90 .
- the bore tube 90 may be said to have a chamfered exit.
- the angular surface 100 need not be a flat surface, but a flat surface at an outward angle of approximately 10-15° may be most advantageous.
- the angular surface 50 of the muzzle 40 and the angular surface 100 of the bore tube 90 should be complimentary, so that the two angular surfaces 50 , 100 may engage one another.
- the angular surface 100 and the bore 92 of the bore tube 90 should be concentric about the longitudinal axis thereof 94 .
- the external portion of the bore tube 90 may advantageously include an outwardly extending shoulder section 102 located slightly toward the input end 96 from the angular surface 100 . It is intended that this shoulder section 102 be spaced from the input end 96 of the bore tube 90 such that when the shoulder section 102 of the bore tube 90 engages the corresponding shoulder 73 on the insert housing 70 , the input end 96 of the bore tube 90 is flush with the proximal face 76 of the insert housing 70 .
- the bore tube 90 removably fits within the internal passage 72 of the insert housing 70 , with the insertion of the bore tube 90 being from the direction of the distal face 74 towards the proximal face 76 .
- the outer dimensions of the bore tube 90 should be sized accordingly.
- the outer dimensions of the bore tube 90 should advantageously be sized as large as possible while still maintaining a sliding fit within the insert housing 70 , so that the internal walls of the insert housing 70 provide radial support for the bore tube 90 .
- the outer surface of the bore tube 90 may include one or more grooves 104 for accepting corresponding optional collars 106 , such as common O-rings, to provide a small amount of friction to help slightly retain the bore tube 90 within the insert housing 70 during assembly and disassembly, while still allowing the output end 98 of the bore tube 90 to radially float somewhat within the insert housing 70 .
- There may be one seal 106 preferably located towards the end nearest the muzzle portion 40 , or there may be a plurality of seals 106 disposed in spaced relation to one another, if desired.
- the barrel assembly 30 of FIGS. 3-4 allows for self-alignment of the bore tube 90 with the muzzle 40 , thereby allowing for lower cost production of “two-piece” barrels.
- the user slides the bore tube 90 into the insert housing 70 from the distal face 74 of the insert housing 70 , with the input end 96 inserted first. When inserted fully, the angled surface 100 of the bore tube 90 disposed towards the distal face 74 of the insert housing 70 .
- the muzzle 40 is then attached to the insert housing 70 , and screwed into place. The displacement of the muzzle 40 towards the insert housing 70 during the screwing process causes the angled surface 50 of the muzzle 40 to engage the angled surface 100 of the bore tube 90 .
- the shoulder section 102 on the bore tube 90 engages the corresponding shoulder 73 in the internal passage 72 of the insert housing 70 .
- the distal portion of the bore tube 90 is trapped between the shoulder 73 of the insert housing 70 on one side and the angled surface 50 of the muzzle 40 on the other, resulting in firm engagement of the respective angled surfaces 50 , 100 .
- the engagement of the angled surfaces 50 , 100 causes the longitudinal axis 44 of the muzzle 40 and the longitudinal axis 72 of the bore tube 90 to become aligned, thereby self-aligning the bores 42 , 92 of the muzzle 40 and the bore tube 90 .
- the gun barrel assembly 30 of the present invention may include one or more additional bore tubes 120 .
- the various bore tubes 90 , 120 should have the same outer dimensions, but may advantageously have bores of different inner diameters. With such an arrangement, a user may readily change the effective bore size of shank assembly 60 to accommodate different sizes of paintballs. The user need only remove the muzzle 40 by unscrewing it from the shank assembly 60 , slide the first bore tube 90 out from the insert housing 70 , insert a new bore tube 120 into the insert housing 70 , and reattach the muzzle 40 . Note that no special alignment process is needed, as the muzzle 40 and bore tubes 90 , 120 are self-aligning. Further, notice that the entire process can be accomplished without removing the insert housing 70 from the gun body 12 .
- the different (bore) sizes of bore tubes 90 , 120 may be color coded, with the color visible through the viewing window 82 on the insert housing 70 .
- bore tubes 90 with an inner diameter of 0.660 inches may be colored red
- bore tubes 120 of inner diameter 0.663 inches may be orange
- bore tubes 120 with an inner diameter of 0.700 inches may be blue, and so forth.
- the various bore diameters of the bore tubes 90 , 120 should not be larger than the diameter of the bore 42 of the muzzle 40 , so that the paintball does not encounter an inwardly extending lip and rupture inside the barrel assembly 30 .
- the gun barrel assembly 30 of the present invention may be sold as separate components, such as a shank assembly 60 alone for a user that already owns a muzzle 40 , or as a collection or kit of an insert housing 70 , a muzzle 40 , a plurality of different size bore tubes 90 , 120 , and an optional carrying case (not shown).
- One embodiment of the paintball gun barrel assembly 30 of the present invention include a muzzle portion made from 6061-T6 aluminum, with an insert housing 70 made from 303 stainless steel with a 0.748 inch diameter internal passage 72 (upstream from shoulder 73 ) and a shoulder 73 of 0.805 inches, and a bore tube 90 made from 6061-T6 aluminum and approximately six inches long, with an outer diameter upstream from the shoulder 102 of 0.7465 inches and a shoulder 102 of 0.803 inches.
- the angled surfaces 50 , 100 may be approximately 11.5° by ⁇ fraction (3/16) ⁇ inch chamfer.
- the overall length of the barrel assembly may be generally about twelve to sixteen inches.
- the shank assembly 60 comprises at least two parts—an insert housing 70 and a distinct bore tube 90 .
- the self-aligning aspects of the present invention may also be realized with an alternate gun barrel assembly embodiment using a single-piece shank assembly 60 that does not include a bore tube 90 removable from an insert housing 70 but with the two parts 70 , 90 instead integrally formed into a single part.
- Such a shank assembly 60 would still have a bore 92 and a angled surface 100 on the distal end thereof.
Abstract
Description
Claims (34)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/227,735 US6668815B1 (en) | 2002-08-26 | 2002-08-26 | Self-aligning paintball gun barrel assembly with optional bore size adapter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/227,735 US6668815B1 (en) | 2002-08-26 | 2002-08-26 | Self-aligning paintball gun barrel assembly with optional bore size adapter |
Publications (1)
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US6668815B1 true US6668815B1 (en) | 2003-12-30 |
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US10/227,735 Expired - Lifetime US6668815B1 (en) | 2002-08-26 | 2002-08-26 | Self-aligning paintball gun barrel assembly with optional bore size adapter |
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Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030208942A1 (en) * | 2002-04-22 | 2003-11-13 | Beretta Ugo Gussalli | Casing for firearms |
US20050066953A1 (en) * | 2003-09-10 | 2005-03-31 | Terry Zouboulakis | Pneumatic paintball marker, universal barrel, adaptor and insert combination |
US20050155513A1 (en) * | 2004-01-15 | 2005-07-21 | Barry Belog | Projectile and related gun |
US20060011187A1 (en) * | 2004-06-15 | 2006-01-19 | Gardner William Jr | Paintball gun kit |
US20060075673A1 (en) * | 2004-10-07 | 2006-04-13 | Goepfert John R | Paintball-gun barrel modifications that increase repeatability and accuracy |
US20080168973A1 (en) * | 2007-01-16 | 2008-07-17 | Levtec, Llc | Paintball Marker Conversion Unit |
US20090241932A1 (en) * | 2008-03-31 | 2009-10-01 | Yao-Gwo Gan | Barrel for paint ball guns |
US7628149B1 (en) | 2004-08-23 | 2009-12-08 | Summit Fitness Products Incorporated | Variable bore paintball barrel connector system |
US20100154764A1 (en) * | 2008-12-24 | 2010-06-24 | Sheng-Jen Liao | Barrel for prohibiting paintball from dropping therefrom |
US20110000474A1 (en) * | 2009-07-01 | 2011-01-06 | Planet Eclipse Limited | Paintball marker with ability to discharge different sized projectiles |
US20120090588A1 (en) * | 2010-10-14 | 2012-04-19 | Jeffrey Chen | Initial velocity accelerating tube |
US20140075817A1 (en) * | 2012-07-31 | 2014-03-20 | Jesus S. Gomez | Barrel nut assembly and method to attach a barrel to a firearm using such assembly |
US20140230802A1 (en) * | 2013-02-15 | 2014-08-21 | Paintball Innovations, Inc | Adapter Kit and Method for a Paintball Marker with a .68 Caliper Barrel |
US20160047621A1 (en) * | 2014-08-12 | 2016-02-18 | Brian Sullivan | Airsoft Kit to Convert to a Paintball Gun |
US9506711B2 (en) | 2012-07-31 | 2016-11-29 | Lwrc International Llc | Barrel nut assembly and method to attach a barrel to a firearm using such assembly |
US9506702B2 (en) | 2014-01-10 | 2016-11-29 | Jv Precision Machine Company | Externally loading semi-automatic firearm with integral or non-removable feeding device |
US9625232B2 (en) | 2013-03-15 | 2017-04-18 | Lwrc International Llc | Firearm buffer system and buttstock assembly |
US9658011B2 (en) | 2011-08-17 | 2017-05-23 | Lwrc International Llc | Bolt carrier and bolt for gas operated firearms |
US9772150B2 (en) | 2012-07-31 | 2017-09-26 | Lwrc International Llc | Firearm receiver assembly |
US9810495B2 (en) | 2011-08-17 | 2017-11-07 | Lwrc International Llc | Bolt carrier and bolt for gas operated firearms |
US10036605B1 (en) * | 2017-04-06 | 2018-07-31 | Kurt A. Kosman | Adjustable muzzle device |
USD857808S1 (en) * | 2018-01-11 | 2019-08-27 | Shenzhen Chuangliansizhong Technology Co., Ltd. | Toy gun barrel |
US10890405B1 (en) * | 2019-07-01 | 2021-01-12 | Sang su Yoon | Non-tilting outer barrel for toy gun |
US11236961B1 (en) * | 2021-05-25 | 2022-02-01 | Hk Army Inc. | Barrel assembly for pneumatic paintball gun |
US11774207B1 (en) * | 2022-05-26 | 2023-10-03 | Daniel Spence | Paintball gun barrel system |
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Cited By (55)
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---|---|---|---|---|
US20030208942A1 (en) * | 2002-04-22 | 2003-11-13 | Beretta Ugo Gussalli | Casing for firearms |
US7036259B2 (en) * | 2002-04-22 | 2006-05-02 | Fabbrica D'armi Pietro Beretta S.P.A. | Casing for firearms |
US20050066953A1 (en) * | 2003-09-10 | 2005-03-31 | Terry Zouboulakis | Pneumatic paintball marker, universal barrel, adaptor and insert combination |
US7076905B2 (en) * | 2003-09-10 | 2006-07-18 | Terry Zouboulakis | Pneumatic paintball marker, universal barrel, adaptor and insert combination |
US20050155513A1 (en) * | 2004-01-15 | 2005-07-21 | Barry Belog | Projectile and related gun |
US7096793B2 (en) * | 2004-01-15 | 2006-08-29 | Barry Belog | Projectile and related gun |
US7624723B2 (en) * | 2004-06-15 | 2009-12-01 | Smart Parts, Inc. | Paintball gun kit |
US20060011187A1 (en) * | 2004-06-15 | 2006-01-19 | Gardner William Jr | Paintball gun kit |
US7628149B1 (en) | 2004-08-23 | 2009-12-08 | Summit Fitness Products Incorporated | Variable bore paintball barrel connector system |
US20060075673A1 (en) * | 2004-10-07 | 2006-04-13 | Goepfert John R | Paintball-gun barrel modifications that increase repeatability and accuracy |
US7565902B2 (en) | 2007-01-16 | 2009-07-28 | Levtec, Llc | Paintball marker conversion unit |
US20080168973A1 (en) * | 2007-01-16 | 2008-07-17 | Levtec, Llc | Paintball Marker Conversion Unit |
US20090241932A1 (en) * | 2008-03-31 | 2009-10-01 | Yao-Gwo Gan | Barrel for paint ball guns |
US20100154764A1 (en) * | 2008-12-24 | 2010-06-24 | Sheng-Jen Liao | Barrel for prohibiting paintball from dropping therefrom |
US8037877B2 (en) * | 2008-12-24 | 2011-10-18 | Yao-Gwo Gan | Barrel for prohibiting paintball from dropping therefrom |
US20110000474A1 (en) * | 2009-07-01 | 2011-01-06 | Planet Eclipse Limited | Paintball marker with ability to discharge different sized projectiles |
US7980238B2 (en) * | 2009-07-01 | 2011-07-19 | Planet Eclipse Limited a company of the United Kingdom | Paintball marker with ability to discharge different sized projectiles |
US20110265777A1 (en) * | 2009-07-01 | 2011-11-03 | Planet Eclipse Limited | Paintball marker with ability to discharge different sized projectiles |
US8397706B2 (en) * | 2009-07-01 | 2013-03-19 | Plantet Eclipse Limited | Paintball marker with ability to discharge different sized projectiles |
US8453634B2 (en) * | 2010-10-14 | 2013-06-04 | J.B. Unicorn Ltd. | Initial velocity accelerating tube |
US20120090588A1 (en) * | 2010-10-14 | 2012-04-19 | Jeffrey Chen | Initial velocity accelerating tube |
US9658011B2 (en) | 2011-08-17 | 2017-05-23 | Lwrc International Llc | Bolt carrier and bolt for gas operated firearms |
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